I bought this game on the 8th of March for £40. Had the same problems as everyone else; couldn't get on the servers despite only wanting to play single player, losing games when I eventually managed to get on the servers and just being kicked off when the server lost connection.
The fact that you have to be connected to the internet is ridiculous. I want to be unsociable and play by myself and yet I still need to connect up! As others have pointed out you haven't really bought this game - you've rented it for as long as EA see fit to keep the servers up and running.
Despite all this I thought I would save my review until the issues had been fixed and I could have a proper play of the game how it was intended. I WAS DISAPPOINTED! The map is absolutely tiny - it took me about an hour to nearly fill it and then I spent another hour doing nothing, just waiting for the extremely slow 'fast' time speed to progress enough so that some of my buildings became high rises. After this it just seemed to lose all of the fun. I wasn't able to create the city I wanted and be creative because there simply wasn't the space. No doubt they will go the same way as 'The Sims' and create expansion packs for extra content that should have featured in a game they charged you £40 for. I for one will not be buying them and financing a company that cares more about profit than its customers.
I am actually kicking myself that I was stupid enough to buy this game on release day and not check reviews. What a waste of £40!